Many factors affect speed:
You will experience the following download speeds during peak hours (7pm to 11pm):
Factors Affecting Speeds
In most instances, a connection over WiFi will be slower than if you were connected physically to your modem with a cable, particularly if there is a wall in the way or there are multiple users on the same WiFi network. WiFi performance can also be impacted by interference from surrounding devices and nearby users on the same channel.
If there is a lot of "traffic" (i.e. lots of people downloading stuff at the one time) your internet speed can be impacted.
Older or outdated equipment such as Modem’s can affect the speed of your connection. Other equipment such as filters, sockets internal wiring may also cause speed issues.
Content being downloaded from overseas servers can be lower than domestic content due to congestion on international pipes.
Type of technology
NBN has adopted a multi-technology mix which means that not every connection is the same, this will result in customers receiving different speeds depending on the type of technology they are connected to:
Fibre to the Premise (FTTP): Premises that are connected directly with Fibre, customers in most cases will receive the best possible speed available.
Fibre to the Node (FTTN): Fibre connected to a Node and using the existing copper network to complete the connection to a premise.
Fibre to the Basement (FTTB): Fibre connected to a building’s communication room then utilising the existing technology in the building to connect a premise.
Fixed Wireless (FW): Data travels from a transmission tower to a rooftop antenna which is connected to a network device connected to the premise. This is not a wired connection.
Hybrid Fibre Coaxial (HFC): Fibre connected to a Node and using the existing Pay TV or cable network to complete the connection to the premise.
Fibre to the Curb (FTTC): Fibre connected to a Distribution Point Unit generally located inside a pit on the street and using existing copper network to complete the connection to a premise.